Hoist



l 2 Sheets-Sheet l C. V. KOONS HOIST.

Filed April 29. 1931 Jan' 23 Minn@ X C. V. KOONS Jan. 23, 1934.

HOIST Filed April 29, 1951 2 SheetSj-Sheet 2 Patented Jan. 23, 1934UNITED STATES PATENT OFFICE This invention relates to improvements inadjustable journals for wheels or other rotary elements, and a principalobject of the invention is to provide a journal having novel, readilyaccessible and accurate means for axial adjustment of the rotaryelement.

The invention has an important application to hoists and the likemechanisms where axial adjustment of the trolley wheels is sometimesrequired, and a further object of the invention, therefore, is toprovide a hoist construction having novel and improved means for axiallyadjusting one or more of the trolley wheels.

A further object of the invention is to provide a journal in which theaforedescribed adjustment may be effected without disrnounting ordisassembling any of the parts of the journal or of the associatedmechanism.

In the attached drawings, in which I have illustrated my invention asapplied to hoists of a Well known type:

Figure 1 is an elevational and partial sectional View showing the hoistwheels journaled in accordance with my invention;

Fig. 2 is an end elevational view of one of the journals, and

Fig. 3 is a section on the line 3 3, Fig. 1.

With reference to the drawings, 1 constitutes a portion of a hoisthousing in which are journaled a pair of traction wheels 2, 2. Asillustrated, these wheels are adapted to travel upon an elevated rail 3in the form in the present instance of a standard I-beam, the lowerflanges of the beam constituting the tracks on which the wheels operate.

As illustrated in Fig. 1, each of the wheels is journaled upon anelement 4 supported and longitudinally adjustable in a suitable guide 5forming a part of the housing 1. The inner Yprojecting end of theelement 4 is shaped to receive an antifriction bearing 6 upon which thewheel operates. The element 4 is prevented from rotating in the guide 5and is locked in any adjusted position by means of a set screw 7, theinner end of which projects into a longitudinal groove 8 in the journalelement. Accurate longitudinal adjustment of the journal element isafforded through the medium of an adjusting screw 9, the inner threadedportion 11 of which is engaged in a threadedl recess in the outer end ofthe said element. The adjusting screw 9 is provided adjacent its outerend with a circumferential recess 12, into which projects the two halvesof a locking ring 13, the ring sections being secured to the housing byscrews 14 and functioning to secure the adjusting screw rotatably in thehousing. The outer of the two iianges 15 which dene the circumferentialrecess' 12 is provided in the present instance with a plurality ofnotches 16, see Fig. 2, which in diierent adjusted positions of thescrew, are adapted to register individually with a tapped hole in one ofthe sections of the ring 13, into which may be threaded a screw 17 whichthereby functions to lock the adjusting screw against rotation. ,65

In operation, if axial adjustment of either of" the wheels 2 isrequired, the associated set screw 7 is loosened, the locking screw 17removed, and the adjusting screw 9 turned by a` suitable wrench appliedto the outer end thereof, with the result that the element 4 is moved inthe axial direction to the extent required. Thereafter, the lockingscrew 17 is replaced and the set screw 7 tightened to securely lock theparts in the adjusted position. It will be noted that this adjustmentiii-.75 volves no removal of the wheel or its journal and "i affords anaccurate axial adjustment of they wheel by means that are readilyaccessible and easily manipulated.

There may be minor modiiications in the construction defined withoutdeparture from the in-"r' vention.

I claim:

1. The combination with a housing having a guide passage therein, of ajournal member lon-- gitudinally adjustable in said guide, said journal`member having a threaded opening in one end, an adjusting screw threadedinto said opening, said screw having a circumferential groove, elementssecured to said housing and extending into, said groove to prevent axialmovement of the" adjusting screw While permitting rotation thereof toadjust the journal memberin the guide, means for releasably locking theadjusting screw against rotation, and releasable means for immobilizing.the journal member with respect to the housing.""

2. An adjustable journal comprising a relatively fixed guide, a journalmember longitudinallyslidable in said guide, means for preventingrotation of the journal member in the guide, means asso-1 100 ciatedwith said guide for axially adjusting the journal member in the latter,and means for releasably immobilizing said adjusting means with Yrespect to the guide, said adjusting means being interlocked with saidjournal member whereby.l05 immobilization of the adjusting meansmaintains" the journal member against longitudinal movement.

3. An adjustable journal comprising a relatively fixed guide, a journalmember adjustably,

mounted in said guide, said member having a longitudinal slot, a setscrew threaded into said guide and adapted to enter the said slot tothereby prevent rotation of the journal member in the guide Whilepermitting longitudinal movement, means associated With said guide foraxially adjusting the journal member in the latter, and means forreleasably immobilizing said adjusting means With respect to the guide,said adjusting means being interlocked With said journal member wherebyimmobilization of the adjusting means maintains` the journal memberagainst longitudinal movement.

4. An adjustable journal comprising a relatively xed guide, a journalmember adjustably mounted in said guide, means for preventing rotationof the journal member while permitting longitudinal movement thereof inthe guide, rotary means for axially adjusting the journal member in theguide, said means having axially -spaced anges defining acircumferential recess,

an element secured to the guide and projecting into said recess tomaintain said adjusting means against axial movement in the guide, andmeans carried by one of said anges and adapted to releasably interlockwith said element to thereby prevent rotation of said adjusting meansWith respect to the guide, said adjusting means being interlocked Withsaid journal member whereby immobilization of the adjusting meansmaintains the journal member against longitudinal movement.

5. In a hoist, the combination with a trolley having axially spacedWheels adapted to operatively engage opposite sides of afrail, journalsfor said Wheels, at least one of said journals being longitudinallyadjustable in the trolley structure, means on said structure forpreventing rotation of said journal While permitting longitudinaladjustments thereof, means associated with said structure for axiallyadjusting said journal, and means for immobilizing said adjusting meanswith respect to said structure, said adjusting means being interlockedwith said journal Whereby immobilization of the adjusting meansmaintains the journal against longitudinal movement in said structure.

y CHARLES V. KOONS.

